Disney Channel’s “Invisible Sister” will go into production in the spring, when “Girl Meets World” and “Mighty Med” are on hiatus. Then the movie will premiere in late 2015 or early 2016.

Here’s a description of the movie:

‘Invisible Sister’ is the comedy adventure story of Cleo (Rowan Blanchard), a girl whose science project goes terribly wrong, making her popular older sister, Molly (Paris Berelc), suddenly invisible. ‘Invisible Sister’ is based on the book My Invisible Sister by Beatrice Colin and Sara Pinto.